Last good deal I got was in GA at the I-75 X326 Pilot. I think it was a promotional thing, but I got Winston Lights for $28 a carton. SC and MO is usually cheap too. Them little gas stations in front of Walmarts are always the cheapest in towns.
South carolina off 95 Pilot's, used to be best price's when I ran that area. I have been off the road about a year now, I was getting Doral's for about $18 a carton.
from what ive seen, SC, GA, MO, VA, NC and i believe WY have about the cheapest smokes around. As for where muffery USA(gas station in front of wall-mart) fj\pilot and loves seem to be the cheapest TSs for cigs, TA and petro seem to charge more
Cheapest I found was a store called The Black Hole, close to the Petro in Joplin, MO. Carton of Pall Malls for $23.40. But that was about eight months ago.
I notice a lot of places in Indiana with signs saying "cig prices at state minimum", I didn't know the state could set a minimum price. The cheapest smokes I've seen advertised in Indiana are Wave and Wings for around $30/carton.